A Lib Dem vowing to oppose the benefits cuts has tabled an urgent question to force the Chancellor to explain himself to the Commons.

A Lib Dem vowing to oppose the benefits cuts has tabled an urgent question to force the Chancellor to explain himself to the Commons.

MP Bob Russell claims they were not part of the coalition agreement and George Osborne showed "contempt" to MPs by revealing the extra £4billion figure to the media.

And he claimed a "turf war" over benefits with Work and Pensions Secretary Iain Duncan Smith was "insulting" those in need.

He said: "I do wish these two would stop playing silly Bs.

"We are talking about people's welfare and I find it somewhat insulting that these two high-ranking Tory ministers are playing games.

David Cameron should bang their heads together."

Speaker John Bercow will decide if Mr Osborne should be summoned to respond.

Mr Russell went on: "Mr Osborne made a statement to the BBC without the courtesy of coming to the House. I hope Mr Speaker will take the view that this is another example of ministers treating the House with contempt."

His objection came as it was revealed that the disabled and ill will bear the brunt of ConDem spending cuts.

A leaked letter showed Mr Osborne telling Mr Duncan Smith to take £2.5billion from the budget of the Employment and Support benefit given to people too ill to work.